EP1373351A1 - Process for the preparation fo polyurethane foams - Google Patents
Process for the preparation fo polyurethane foamsInfo
- Publication number
- EP1373351A1 EP1373351A1 EP02726203A EP02726203A EP1373351A1 EP 1373351 A1 EP1373351 A1 EP 1373351A1 EP 02726203 A EP02726203 A EP 02726203A EP 02726203 A EP02726203 A EP 02726203A EP 1373351 A1 EP1373351 A1 EP 1373351A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polyol
- weight
- parts
- average molecular
- polyether
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 229920005830 Polyurethane Foam Polymers 0.000 title claims description 10
- 239000011496 polyurethane foam Substances 0.000 title claims description 10
- 229920005862 polyol Polymers 0.000 claims abstract description 46
- 150000003077 polyols Chemical class 0.000 claims abstract description 46
- 229920000570 polyether Polymers 0.000 claims abstract description 23
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 20
- 239000006260 foam Substances 0.000 claims abstract description 14
- 239000012948 isocyanate Substances 0.000 claims abstract description 11
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 11
- 230000001588 bifunctional effect Effects 0.000 claims abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 7
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 6
- 230000005494 condensation Effects 0.000 claims description 6
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 5
- -1 hydroxy alkane Chemical class 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 239000007858 starting material Substances 0.000 claims description 3
- DJOWTWWHMWQATC-KYHIUUMWSA-N Karpoxanthin Natural products CC(=C/C=C/C=C(C)/C=C/C=C(C)/C=C/C1(O)C(C)(C)CC(O)CC1(C)O)C=CC=C(/C)C=CC2=C(C)CC(O)CC2(C)C DJOWTWWHMWQATC-KYHIUUMWSA-N 0.000 claims description 2
- OUCPJZWNFRYRBI-UHFFFAOYSA-N aniline;formaldehyde Chemical compound O=C.NC1=CC=CC=C1 OUCPJZWNFRYRBI-UHFFFAOYSA-N 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 12
- 239000000203 mixture Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 229920002635 polyurethane Polymers 0.000 description 6
- 239000004814 polyurethane Substances 0.000 description 6
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 5
- 238000009472 formulation Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000004094 surface-active agent Substances 0.000 description 5
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 239000012973 diazabicyclooctane Substances 0.000 description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000012972 dimethylethanolamine Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229960002887 deanol Drugs 0.000 description 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 150000003510 tertiary aliphatic amines Chemical class 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- LFSYUSUFCBOHGU-UHFFFAOYSA-N 1-isocyanato-2-[(4-isocyanatophenyl)methyl]benzene Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=CC=C1N=C=O LFSYUSUFCBOHGU-UHFFFAOYSA-N 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 1
- HEBKCHPVOIAQTA-QWWZWVQMSA-N D-arabinitol Chemical compound OC[C@@H](O)C(O)[C@H](O)CO HEBKCHPVOIAQTA-QWWZWVQMSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229930195725 Mannitol Natural products 0.000 description 1
- 229920002396 Polyurea Polymers 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- 229940113120 dipropylene glycol Drugs 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
- 150000004072 triols Chemical group 0.000 description 1
- 239000000811 xylitol Substances 0.000 description 1
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 1
- 235000010447 xylitol Nutrition 0.000 description 1
- 229960002675 xylitol Drugs 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0008—Foam properties flexible
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/0058—≥50 and <150kg/m3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
Definitions
- This invention relates to a process for the preparation of a polyurethane foam.
- this invention relates to a process for the preparation of a visco-elastic polyurethane foam using an isocyanate component based on MDI (diphenylmethane diisocyanate).
- visco-elastic polyurethane foam refers particularly to block and moulding (hot and cold) polyurethane expanded materials or foams with a density substantially from 50 to 100 kg/m 3 and suitably having a resilience value, measured according to the test method UNI 6357-68 (Flexible Urethane Cellular Material - Determination of resilience (ball rebound)), lower than 30% and a 50 % compression set value at 23°C, measured according to the test method ISO 1856-80, of less than 4%, preferably less than 3%. These foams have the characteristic of slowly returning to their original form after being compressed.
- Materials having this characteristic are used in the preparation of impact absorption articles, in the furnishing industry for the preparation of mattresses and cushions and, more generally, in applications where an object capable of moving without bouncing or rebounding needs to be supported and in healthcare furniture market for example in the production of anti-sore seats and beds.
- Visco-elastic polyurethane foams may be prepared by reacting toluene diisocyanate (TDI) with a polyol compound which comprises a polyol polyether or polyester, as well as conventional additives for this type of reaction.
- TDI toluene diisocyanate
- the use of TDI may cause problems of a hygienic- environmental nature both in the preparation phase of the foam and during use, due to the possible presence of non-reacted monomer which may be released from the end-product after its preparation.
- MDI isocyanates
- polyethers typically requires the use of certain materials, polyethers, polyesters or additives to secure the desired visco-elastic properties.
- MDI with conventional raw materials typically produces traditional flexible foams (resilience higher than 30 %) or non-expanded materials (collapsed products) since MDI is difficult to process.
- visco-elastic polyurethane foams may be prepared from an isocyanate component based on MDI and certain types of conventional polyether polyols and drawbacks for example, high resilience and collapsing foam typical in the art may be reduced or avoided.
- the invention provides a process for the preparation of a visco-elastic foam having a density from 50 to 100 kg/m 3 which comprises reacting: a) an isocyanate component with a functionality from 2.1 to 2.7 having general formula (I):
- ⁇ represents a phenyl group and n is an integer greater than or equal to 1 ;
- a polyol component comprising: i) 80 to100% and preferably 85 to 95% by weight based on the total polyol component, of a bifunctional polyol polyether having an average molecular weight from 1000 to 4000, preferably from 1500 to 3000; ii) 0 to 5% and preferably 1 to 5% by weight based on the total polyol component, of a monofunctional alcohol R-OH wherein R is selected from a Ci to C 2 o.and preferably a Ci to C ⁇ 2 , alkyl and/or isoalkyl radical (referred to herein as an (iso)alkyl radical) and a group obtained by the condensation of a C to C 6 olefinic oxide on a Ci to C 2 o alkyl and/or isoalkyl radical; iii) 0 to 20% and preferably 5 to15% by weight, based on the total polyol
- the amount of water present is selected so as to ensure that the desired density of the polyurethane foam is secured.
- the isocyanate component having general formula (I) is suitably obtained from the phosgenation of formaldehyde-aniline condensates and generally called raw MDI or polymeric MDI.
- the isocyanate component having formula (I) may be diluted with 4,4'-diphenylmethane diisocyanate, optionally mixed with 2,4'-diphenylmethane diisocyanate.
- the bifunctional polyol polyether (i) used in the preparation of visco- elastic expanded materials according to the process is suitably selected from polyol polyethers obtained by the condensation of a C 2 to C 6 olefinic oxide on a compounds having two active hydrogen atoms (referred to herein as a "starter"), for example diethyleneglycol and dipropyleneglycol or water. Ethylene oxide, propylene oxide or mixtures of them are preferred olefinic oxides.
- the monofunctional alcohol ii) suitably has a molecular weight of 200 to 1500 and especially 250 to 1200.
- the alcohol ii) is a group obtained by the condensation of an olefin oxide on a C, to C 20 alkyl and/or isoalkyl radical
- the olefin oxide preferably comprises ethylene oxide and/or propylene oxide.
- R is a group obtained by the condensation of ethylene oxide, and optionally propylene oxide, on a C, to C 12 and especially a C 2 to C 8 alkyl and/or isoalkyl radical.
- suitable polyols with a functionality of three or higher include polyol polyethers based on ethylene oxide and/or propylene oxide and in which the starter is a triol such as glycerin or trimethylolpropane; a tetrol such as pentaerythritol; an alkanolamine such triethanolamine, or a polyfu notional hydroxy alkane such as xylitol, arabitol, sorbitol, mannitol, and the like.
- the starter is a triol such as glycerin or trimethylolpropane
- a tetrol such as pentaerythritol
- an alkanolamine such triethanolamine
- a polyfu notional hydroxy alkane such as xylitol, arabitol, sorbitol, mannitol, and the like.
- polyols can be used as such or they may contain, in dispersion or partially grafted to the polyol chains, solid particles, preferably polymeric, which suitably have dimensions lower than 20 micrometers.
- Solid particles preferably polymeric, which suitably have dimensions lower than 20 micrometers.
- Polymers suitable for this purpose include polyacrylonitrile, polystyrene, polyvinylchloride polyurea, mixtures of them, copolymers of them and .
- These solid particles may be prepared by means of polymerization in situ in the polyol or, as desired they may be prepared separately and subsequently added to the polyol.
- the polyol composition may also comprise further additives commonly used in the preparation of polyurethane expanded products such as amine catalysts, for example triethylenediamine, and/or metal catalysts such as stannous octoate, crosslinkers, cell regulators, thermo-oxidation stabilizers, pigments, antiflame agents, etc. Details on the polymerization of polyurethanes are provided in the test "Saunders & Frisch - Polyurethanes, Chemistry and Technology" Interscience, New York, 1964, and in "Polyurethane Handbook, edited by G. Oertel, Hanser Publishers, Kunststoff, New York, 1993.
- the expanding agent suitably comprises water and an auxiliary blowing agent for example CO 2 in liquid or gaseous form, and preferably consists of water.
- Water has a critical function as it causes the formation of urea bonds associated with the development of carbon dioxide which causes the expansion process of the polyurethane polymer , obtaining visco- elasticity.
- Quantities of water from 1 to 3 parts by weight with respect of 100 parts of polyol component are suitably employed.
- the resiliency of the foam is lower than 30% and desirably lower than 10 %.
- the polyol component comprises at least some mono alcohol of formula R-OH as herein defined as this assists in providing a lower resiliency.
- a visco-elastic foam is obtained, having a density of 65 kg/m 3 , a compression set of 2.35% and resilience of 24%.
- a visco-elastic foam is obtained, having a density of 55 kg/m 3 , a compression set of 3.5% and resilience of 29%.
- a visco-elastic foam is obtained, having a density of 77 kg/m 3 , a compression set of 2.70% and resilience of 28%.
- TEDIMON 4420 60.5 parts by weight of TEDIMON 4420 are reacted, according to the "free rising" technique, with a polyol formulation consisting of 90 parts by weight of a trifunctional polyol polyether having an average molecular weight 5 equal to 6000 (TERCAROL 427 of Enichem S.p.A.); 10 parts by weight of trifunctional polyol polyether having an average molecular weight of 4000 (TERCAROL 241); 3.1 parts by weight of water; 3.5 parts by weight of diethanolamine; 0.15 parts by weight of tertiary aliphatic amine (DABCO 33 LV); 0.6 parts of a siliconic surface-active agent (TEGOSTAB B 8636); 0.15 o parts of a solution of tin dibutyldilaurate (DABCO T-12 of Air Products).
- the reaction index is equal to 100.
- a visco-elastic foam is obtained, having a density of 100 kg/m 3 , a compression set of 2.1% and resilience of 18%.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI20010619 | 2001-03-23 | ||
| IT2001MI000619A ITMI20010619A1 (it) | 2001-03-23 | 2001-03-23 | Procedimento per la preparazione di schiume poliuretaniche |
| PCT/EP2002/003249 WO2002077056A1 (en) | 2001-03-23 | 2002-03-22 | Process for the preparation fo polyurethane foams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1373351A1 true EP1373351A1 (en) | 2004-01-02 |
Family
ID=11447350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02726203A Withdrawn EP1373351A1 (en) | 2001-03-23 | 2002-03-22 | Process for the preparation fo polyurethane foams |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1373351A1 (enExample) |
| JP (1) | JP2004523632A (enExample) |
| KR (1) | KR20030085039A (enExample) |
| CN (1) | CN1229413C (enExample) |
| BR (1) | BR0208607A (enExample) |
| CA (1) | CA2441694A1 (enExample) |
| IT (1) | ITMI20010619A1 (enExample) |
| MX (1) | MXPA03008624A (enExample) |
| WO (1) | WO2002077056A1 (enExample) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102048419A (zh) | 2002-05-24 | 2011-05-11 | 泰姆普尔管理有限公司 | 舒适枕头 |
| US7530127B2 (en) | 2002-05-24 | 2009-05-12 | Dan-Foam Aps | Pillow and method of manufacturing a pillow |
| US7469437B2 (en) | 2005-06-24 | 2008-12-30 | Tempur-Pedic Management, Inc. | Reticulated material body support and method |
| US20110105634A1 (en) * | 2007-08-27 | 2011-05-05 | Dow Global Technologies Inc. | Catalysis of viscoelastic foams with bismuth salts |
| DE102007061883A1 (de) | 2007-12-20 | 2009-06-25 | Bayer Materialscience Ag | Viskoelastischer Polyurethanschaumstoff |
| DE102008014032A1 (de) | 2008-03-13 | 2009-09-17 | Bayer Materialscience Ag | Viskoelastischer Polyurethanschaumstoff mit Rizinusöl |
| EP2247667B1 (de) | 2008-02-27 | 2016-02-10 | Covestro Deutschland AG | Viskoelastischer polyurethanschaumstoff mit rizinusöl |
| US20130289150A1 (en) * | 2012-04-26 | 2013-10-31 | Bayer Materialscience Ag | Viscoelastic polyurethane foams |
| US9765477B2 (en) * | 2013-08-23 | 2017-09-19 | Dow Global Technologies Llc | Low density attached polyurethane foams made using a combination of frothing and blowing methods |
| US20180345838A1 (en) * | 2015-12-16 | 2018-12-06 | Bridgestone Corporation | Soft polyurethane foam and seat pad |
| KR101875439B1 (ko) * | 2016-08-31 | 2018-08-02 | 현대자동차주식회사 | 폴리우레탄 폼 형성용 조성물, 폴리우레탄 폼 및 이를 포함하는 차량용 내장재 |
| ES2891977T3 (es) * | 2017-07-17 | 2022-02-01 | Dow Global Technologies Llc | Espumas de poliuretano y método de elaboración de la espuma |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3942330A1 (de) * | 1989-12-21 | 1991-06-27 | Basf Ag | Verfahren zur herstellung von flexiblen polyurethan-weichschaumstoffen mit viskoelastischen, koerperschalldaempfenden eigenschaften und hierzu verwendbare polyoxyalkylen-polyol-mischungen |
| DE4129666C2 (de) * | 1991-09-06 | 1996-12-12 | Stankiewicz Gmbh | Verfahren zur Herstellung eines viscoelastischen Dämpfungsschaums mit adhäsiver Oberfläche |
| JP2003505570A (ja) * | 1999-07-26 | 2003-02-12 | ハンツマン・インターナショナル・エルエルシー | 常温硬化軟質フォームを製造するための方法、それに対して有用なポリオール組成物及び反応系、それによって得られるフォーム |
-
2001
- 2001-03-23 IT IT2001MI000619A patent/ITMI20010619A1/it unknown
-
2002
- 2002-03-22 KR KR10-2003-7012345A patent/KR20030085039A/ko not_active Ceased
- 2002-03-22 EP EP02726203A patent/EP1373351A1/en not_active Withdrawn
- 2002-03-22 WO PCT/EP2002/003249 patent/WO2002077056A1/en not_active Ceased
- 2002-03-22 CN CNB028071166A patent/CN1229413C/zh not_active Expired - Fee Related
- 2002-03-22 CA CA002441694A patent/CA2441694A1/en not_active Abandoned
- 2002-03-22 JP JP2002576512A patent/JP2004523632A/ja active Pending
- 2002-03-22 BR BR0208607-7A patent/BR0208607A/pt not_active IP Right Cessation
- 2002-03-22 MX MXPA03008624A patent/MXPA03008624A/es active IP Right Grant
Non-Patent Citations (1)
| Title |
|---|
| See references of WO02077056A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002077056A1 (en) | 2002-10-03 |
| ITMI20010619A0 (it) | 2001-03-23 |
| CN1229413C (zh) | 2005-11-30 |
| CN1498235A (zh) | 2004-05-19 |
| JP2004523632A (ja) | 2004-08-05 |
| KR20030085039A (ko) | 2003-11-01 |
| CA2441694A1 (en) | 2002-10-03 |
| ITMI20010619A1 (it) | 2002-09-23 |
| BR0208607A (pt) | 2004-03-02 |
| MXPA03008624A (es) | 2004-06-30 |
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